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CN-122026863-A - Signal generator of power device

CN122026863ACN 122026863 ACN122026863 ACN 122026863ACN-122026863-A

Abstract

The invention relates to a power device signal generator. Belonging to the technical field of electronic test. The test platform aims to solve the problems that an existing test platform is complex in structure, inconvenient to operate and incapable of meeting the severe signal requirement of a power semiconductor. The intelligent power supply system is mainly characterized by comprising a touch screen control unit, a single pulse output unit, a thyristor rectification/voltage regulation trigger signal output unit and a PLC control unit, wherein the touch screen control unit is connected with the single pulse output unit and the thyristor rectification/voltage regulation trigger signal output unit by adopting an RS485 interface and a network cable, and is connected with the PLC control unit by adopting the RS485 interface and the network cable, and the PLC control unit is connected with the thyristor rectification/voltage regulation trigger signal output unit by adopting a terminal wiring, so that switching among different acquisition voltages is realized, and six paths of single pulse signal output and thyristor rectification/voltage regulation trigger signal output are completed. The invention is mainly used for sending signals with multiple paths of adjustable pulse width and delay time and triggering signals with phase-shifting thyristors for rectification and voltage regulation.

Inventors

  • Chi Yuxiao
  • XIAO YAN
  • TANG JINLONG
  • WU YONGJUN
  • ZENG QINGQUAN
  • DOU LI

Assignees

  • 湖北台基半导体股份有限公司

Dates

Publication Date
20260512
Application Date
20260313
Priority Date
20251223

Claims (10)

  1. 1. A power device signal generator is characterized by comprising a touch screen control unit (1), a single pulse output unit (2), a thyristor rectification/voltage regulation trigger signal output unit (3) and a PLC control unit (4), wherein the touch screen control unit (1) is connected with the single pulse output unit (2) and the thyristor rectification/voltage regulation trigger signal output unit (3) through an RS485 interface and a network cable, transmission of set parameters is achieved, the RS485 interface and the network cable are connected with the PLC control unit (4), the PLC control unit (4) is connected with the thyristor rectification/voltage regulation trigger signal output unit (3) through terminal wiring, switching between different acquisition voltages is achieved, and six paths of single pulse signal output and thyristor rectification/voltage regulation trigger signal output are completed.
  2. 2. A power device signal generator according to claim 1, characterized in that the touch screen control unit (1) comprises a touch screen (11) and a switching power supply (12), the touch screen (11) is used for realizing parameter input and status display, and the switching power supply (12) is used for supplying power to the whole generator.
  3. 3. The power device signal generator according to claim 1 or 2, wherein the single pulse output unit (2) comprises an optical fiber input unit, an optical fiber output unit, a TTL output unit, a first 485 chip communication unit and a first singlechip.
  4. 4. The power device signal generator according to claim 3 is characterized in that the single pulse output unit (2) is a six-channel single pulse output unit and is used for generating and outputting 6-channel rectangular wave signals with adjustable pulse width and delay time, the first singlechip comprises a first STM32 singlechip (21), the optical fiber input unit is an optical fiber receiving module (22), the optical fiber output unit is an optical fiber sending module (23), the TTL output unit is a TTL driving chip module (24), the first 485 chip communication unit comprises a first 485 chip (25) and a first signal isolation module (26), the first 485 chip (25) is connected with the first signal isolation module (26) through a PCB internal wiring and is connected with the first STM32 singlechip (21) through a URAT interface, and the first STM32 singlechip (21) is connected with the optical fiber receiving module (22) through a GPIO interface and is connected with the optical fiber sending module (23) and the TTL driving chip module (24) through a GPIO interface.
  5. 5. A power device signal generator according to any one of claims 1-2 and 4, wherein the thyristor rectifying/voltage regulating trigger signal output unit (3) comprises a synchronous signal acquisition unit (31), a CPLD (32), a second 485 chip communication unit, a second singlechip and a pulse transformer unit (34) for generating a stable thyristor rectifying/voltage regulating trigger pulse train.
  6. 6. The power device signal generator of claim 5, wherein the second singlechip comprises a second STM32 singlechip (33), the second 485 chip communication unit comprises a second 485 chip (35) and a first signal isolation module (36), the second STM32 singlechip (33) is connected with the synchronous signal acquisition unit (31) through a GPIO interface, is connected with the CPLD (32) through a GPIO interface, is connected with the pulse transformer unit (34) through a terminal through a lead, is connected with the second 485 chip (35) through a URAT interface, and the second signal isolation module (36) is connected with the second 485 chip (35) through a PCB internal wiring.
  7. 7. The power device signal generator according to any one of claims 1-2, 4 and 6, wherein the PLC control unit (4) comprises a PLC (41) and a relay (42) for switching power resistors with different resistance values to realize collection of different voltages.
  8. 8. The power device signal generator of claim 7, further comprising a power resistor (43), wherein the power resistor (43) comprises a metal film resistor of 2W, 15KΩ and a metal film resistor of 2KΩ, the PLC (41) is connected with a relay (42) through an external connection, and the relay (42) is connected with the power resistor (43) through a terminal connection.
  9. 9. A power device signal generator according to any one of claims 1-2, 4, 6 and 8, characterized in that the pulse width adjustment range of the single pulse output unit (2) is 1 μs-200s, the delay time adjustment range is 1 μs-200s, the single pulse output unit (2) supports three output modes of invisible light optical fiber, visible light optical fiber and TTL, and the phase shift adjustment range of the thyristor rectifying/voltage regulating trigger signal output unit (3) is 0-180 °.
  10. 10. The power device signal generator according to any one of claims 1-2, 4, 6 and 8, wherein the touch screen control unit (1), the single pulse output unit (2), the thyristor rectifying/voltage regulating trigger signal output unit (3) and the PLC control unit (4) are in a modularized design.

Description

Signal generator of power device Technical Field The invention belongs to the technical field of electronic testing, and particularly relates to a power device signal generator which is applied to sending signals with multiple paths of adjustable pulse width and delay time and rectifying and voltage regulating trigger signals of a phase-shifting thyristor. Background Power device signal generators are key devices in power electronics systems, the background of their application being closely related to the widespread use of power semiconductor devices (e.g., IGBT, MOSFET, siC, gaN, etc.). At present, power application products of companies are increasing, and different driving signals (electric signals, optical signals and time sequence signals) are needed. The existing built platform is complex and inconvenient to use. In addition, the power semiconductor is applied to the fields of new energy, electric automobiles, industrial automation, smart grids, digital energy sources and the like, and the application conditions of the fields are harsh, so that the requirements of high-frequency signals, high control precision, dead zone optimization, low jitter, corresponding rapidness and the like are met. The development of a power semiconductor drive signal generator from single switch control to "neural" for intelligent energy systems requires the development of a new power semiconductor drive signal generator suitable for current new power semiconductor applications. Disclosure of Invention The invention aims to overcome the defects, and provides the power device signal generator which is simple and convenient to operate, can autonomously set the width and delay time of a transmission signal and the phase angle of a driving thyristor. The technical scheme is that the power device signal generator is characterized by comprising a touch screen control unit, a single-pulse output unit, a thyristor rectification/voltage regulation trigger signal output unit and a PLC control unit, wherein the touch screen control unit (1) is connected with the single-pulse output unit and the thyristor rectification/voltage regulation trigger signal output unit through an RS485 interface and a network cable, so that transmission of set parameters is realized, the RS485 interface and the network cable are connected with the PLC control unit, the PLC control unit is connected with the thyristor rectification/voltage regulation trigger signal output unit through terminal wiring, switching among different acquisition voltages is realized, and six paths of single-pulse signal output and thyristor rectification/voltage regulation trigger signal output are completed. In the technical scheme of the invention, the touch screen control unit comprises a touch screen and a switching power supply, wherein the touch screen is used for realizing parameter input and state display, and the switching power supply is used for supplying power to the whole generator. The single pulse output unit comprises an optical fiber input unit, an optical fiber output unit, a TTL output unit, a first 485 chip communication unit and a first singlechip. The single pulse output unit is a six-channel single pulse output unit and is used for generating and outputting 6 channels of rectangular wave signals with adjustable pulse width and delay time, the first single chip microcomputer comprises a first STM32 single chip microcomputer, the optical fiber input unit is an optical fiber receiving module, the optical fiber output unit is an optical fiber sending module, the TTL output unit is a TTL driving chip module, the first 485 chip communication unit comprises a first 485 chip and a first signal isolation module, the first 485 chip is connected with the first signal isolation module through a PCB internal wiring and is connected with the first STM32 single chip microcomputer through a URAT interface, and the first STM32 single chip microcomputer is connected with the optical fiber receiving module through a GPIO interface and is connected with the optical fiber sending module and the TTL driving chip module through a GPIO interface. The thyristor rectification/voltage regulation triggering signal output unit comprises a synchronous signal acquisition unit, a CPLD, a second 485 chip communication unit, a second singlechip and a pulse transformer unit, and is used for generating a stable thyristor rectification/voltage regulation triggering pulse train. The technical scheme includes that the second singlechip comprises a second STM32 singlechip, the second 485 chip communication unit comprises a second 485 chip and a first signal isolation module, the second STM32 singlechip is connected with a synchronous signal acquisition unit through a GPIO interface, is connected with a CPLD through the GPIO interface and is connected with a pulse transformer unit through a terminal through a lead and is connected with the second 485 chip through a URAT interface, and the second si